Update version in package.json in preperation for 1.0.0-rc1 release.

Author: shanedell

package.json

@@ -2,7 +2,7 @@
   "name": "apache-daffodil-vscode",
   "displayName": "Apache Daffodil VS Code Extension",
   "description": "VS Code extension for Apache Daffodil DFDL schema debugging",
-  "version": "1.0.0-SNAPSHOT",
+  "version": "1.0.0",
   "daffodilVersion": "3.2.1",
   "publisher": "asf",
   "author": "Apache Daffodil",